The functions of a membrane protein include cell cohesion, relaying signals between the inside and outside of a cell and transporting proteins across the membrane. A membrane protein is a protein that is attached to a cell and interacts with biological membranes. Each type of membrane protein has a different function.Continue Reading
Each membrane protein can be classified into either integral membrane proteins, which interact with the membrane phospholipids, or peripheral membrane proteins, which temporarily stick to the membrane and help with electron transport.
Some membrane proteins help cells identify one another. This is especially true with the cells of the immune system. Immune system cells have to recognize one another to prevent attacking each other.Learn more about Biology
Enzymes are special proteins that control the speed of certain functions in the body; without them, chemical reactions would take place too slowly to keep a person alive. There are many different types of enzymes in the human body.Full Answer >
In a cell, proteins are made in the cell's ribosomes. Ribosomes string together long chains of amino acids to synthesize proteins. The mRNA (messenger ribonucleic acid), tRNA (transfer ribonucleic acid) and the amino acids work together to form proteins.Full Answer >
Folded membranes improve the efficiency of a variety of processes that occur across a cell's membrane by increasing the surface area available for the proteins that manage those processes. Proteins facilitate respiration, the exchange of nutrients and waste. They also block harmful molecules from entering the cell.Full Answer >
Facilitated diffusion uses carrier proteins to pump substances across the cell membrane that would not normally be able to cross the membrane on their own. These substances include sodium and chloride ions and molecules such as glucose.Full Answer >